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Self-Diagnostics Fault Codes Table

SELF-DIAGNOSTICS FAULT CODES

Code Display on DRB-II Fault Condition
11 IGN Reference Signal No Distributor Reference Signal Pickup During Cranking.
12 Number of Key-Ons Since Last Fault Or Since Faults Were Released Direct Battery Input To SBEC Was Disconnected Within Last 50-100 Ignition Key-Ons.
13  Map Pneumatic Signal No Difference In MAP Sensor Signal Is Detected.
13  Map Pneumatic Change No Difference Is Detected Between MAP Reading & Stored Barometric Pressure Reading.
14  Map Voltage Too Low MAP Sensor Input Less Than Minimum Acceptable Voltage.
14  Map Voltage Too High MAP Sensor Input More Than Maximum Acceptable Voltage.
15  Vehicle Speed Signal No Distance Sensor Signal Detected With Road Load Conditions.
17 Low Engine Temp Coolant Temp. Stays Below Normal Operating Temp. During Vehicle Operation.
21  O2 Sensor Signal No Rich Or Lean Signal Is Detected From O2 Sensor Input.
21  O2 Sensor Shorted Hi O2 Sensor Input Voltage Maintained Above Normal Operating Range.
22  Coolant Voltage Low Coolant Temperature Sensor Input Below Minimum Acceptable Voltage.
22  Coolant Voltage High Coolant Temperature Sensor Input Above Maximum Acceptable Voltage.
24  TPS Voltage Low TPS Sensor Output Less Than Minimum Acceptable Voltage.
24  TPS Voltage High TPS Sensor Output More Than Maximum Acceptable Voltage.
25  AIS Motor Circuits Shorted Condition Detected In One Or More Auto Idle Speed Control Circuits.
26  INJ 1 Peak Current High Resistance Condition Detected In The Inj 1 Injector Bank Circuit.
26  INJ 2 Peak Current High Resistance Condition Detected In The Inj 1 Injector Bank Circuit.
26  INJ 3 Peak Current High Resistance Condition Detected In The Inj 1 Injector Bank Circuit.
27  INJ 1 Control Circuit Inj 1 Injector Bank Output Driver Stage Does Not Respond Correctly To SBEC Control Signal.
27  INJ 2 Control Circuit Inj 2 Injector Bank Output Driver Stage Does Not Respond Correctly To SBEC Control Signal.
27  INJ 3 Control Circuit Inj 3 Injector Bank Output Driver Stage Does Not Respond Correctly To SBEc Control Signal.
31  Purge Solenoid Ckt Open Or Shorted Condition Is Detected In Purge Purge Solenoid Circuit.
32  EGR Solenoid Circuit Open Or Shorted Condition Is Detected In EGR Solenoid Circuit (CA Only).
32  EGR System Failure SBEC Did Not Detect Required Air/Fuel Change During Diagnostic Test (CA Only).
33  A/C Clutch Relay Ckt (S Body) Open Or Shorted Condition Detected In A/C Clutch Relay Circuit.
33  A/C Clutch Relay Ckt (C & Y Body) Open Or Shorted Condition Detected In A/C Clutch Relay Circuit.
34 S/C Servo Solenoids Open Or Shorted Condition Detected In Speed Control Vacuum Or Vent Solenoid Circuits.
35  Radiator Fan Relay (S Body) Open Or Shorted Condition Detected In Radiator Fan Relay Circuit.
35  Radiator Fan Relay (C & Y Body) Open Or Shorted Condition Detected In Radiator Fan Relay Circuit.
41 Alternator Field Ckt Open Or Shorted Condition Detected In Alternator Field Circuit.
42 ASD Relay Circuit Open Or Shorted Condition Detected In Asd Relay Circuit.
42 Z1 Voltage Sense No Battery Voltage Sensed When ASD Relay Is Energized.
46 Battery Voltage High Battery Voltage Sense Input More Than Target Charging Voltage During Engine Operation.
47 Charging Output Low Battery Voltage Sense Input Less Than Target Charging Voltage During Engine Operation And No Significant Change In Voltage Detected During Change In Voltage Detected Duringactive Test Of Alternator Output.
51  Lean F/A Condition O2 Sensor Input Indicates Lean Air/Fuel Ratio During Engine Operation.
52  Rich F/A Condition O2 Sensor Input Indicates Rich Air/Fuel Ratio During Engine Operation
53 Internal Self-Test SBEC DETECTS INTERNAL FAILURE.
54  Sync Pick-Up Signal No High Data Rate Detected During Engine Rotation.
55 (1) Completion Of Fault Code Display By Check Engine Light.
62  EMR Miles Not Stored Unsuccessful Attempt To Update EMR Mileage In SBEC EEPROM (Trucks Only).
63 EEPROM Write Denied Unsuccessful Attempt To Write To An EEPROM Location By SBEC.
N/A Fault Code Error DRB-II Does Not Recognize Fault Identification.
(1) No display on DRB-II.
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